History shows it’s harder than it looks to remove a president from office.

Trump’s reported hush payments to women during the 2016 campaign: “It may be an impeachable offense if it goes to the question of the president procuring his office through corrupt means.”

.. Democrats would investigate Trump’s retaliations against media sources that have reported news about him that he doesn’t like as abuses of “instruments of state power.”

.. three-quarters of self-identified Democratic voters in this month’s elections support impeachment

.. they may well be right that Trump’s actions — on several fronts — could clear the threshold of “high crimes and misdemeanors.” But no one should suffer illusions about the likely result of any impeachment attempts.

.. Being deemed unfit for office — the condition intended by the Founding Fathers to trigger impeachment in the House — has never been enough to get the Senate to remove a president.

History suggests that there wouldn’t be a successful conviction by two-thirds of senators without two other conditions in place:

A chief executive must also be deeply unpopular. And

booting him from office must seem more advantageous for the opposition in the next election than letting him remain there.

.. “High crimes and misdemeanors,” he says, “ought to be held to those offenses which are rather obviously wrong, whether ‘criminal,’ and which so seriously threaten the order of the political society as to make pestilent and dangerous the continuance in power of their perpetrator.”

Lawmakers laid a trap. In February 1867, they overrode Johnson’s veto of the Tenure of Office Act, which required the Senate’s consent for the president to fire and replace identified executive branch officers, including the secretary of war — at that time Edwin Stanton, a strong advocate of U.S. military occupation of the South. On Feb. 21, 1868, Johnson removed Stanton, who refused to leave his office even to go home or to Cabinet meetings.

.. if impeached, Johnson’s successor would have been Ohio’s Benjamin Wade — the Senate’s president pro tempore — who was, to put it mildly, unsuited for the presidency. (For years, he dared challengers to attack him in the Senate, having prominently placed two loaded pistols on his desk when he came into the chamber.)